What is the correct way to declare optionals in swift ?

What are instance methods in Swift?

What property is used to access the raw value of an enumeration case in Swift?

What keyword is used to declare autoclosures as closures that are arguments to functions?

What will be the output of the following code?

When are superclass initializers inherited by subclasses in Swift?

Which of the following are the correct keywords used to declare variables and constants in Swift, respectively?

How do we declare an implicitly unwrapped optional in Swift?

What will be the correct function call for the function defined below?

func test(label1: String) {
 print("test")
}

What is the correct way to declare an empty dictionary in Swift, with key-value pairs of type String and Int, respectively?